In my exercise in model build learning, experimenting with ideas and realizing it won't work, discovering what works and what doesn't, my patience and endurance gets tested to the limit. In that context and with the inspiration of Alessandro's post about lifeboats, I dared to try again, with new ideas, and renewed my attempt to come up with a way to create the lifeboats in the shape I wanted. I cut out the 'blanks" for the 2 halves and rough shaped them on the sander and refined by hand with sand paper and files. The first attempt seems it is working.
As so often I will put aside one object when I am not happy with the result and go to something else only to go back days later when I have 'recovered' from my 'defeat' and recharged with new ideas.
This what happened the last few days. I see the way forward for the lifeboats clear in my mind and went back to my attempt to fit the handrails (cause of much frustration) for the poop deck superstructure. I am now satisfied I have found the workable solution

Since the last time posting I was at it almost daily but despite my best efforts had very little to show for. However I managed to tackle the inside fo'c's'le bulwark and prepared to openings for the fairleads I did over year ago. In the attempt to achieve a higher degree of an accuracy I keep going back to make adjustments and corrections. I managed to install the aft bridgedeck super structure and glue in next deck level. The sidewalls took some time to paint (still having problems with white paint and required a lot of sanding and redoing). Meanwhile I experimented with building the Anchor chain guide ways. I had to cut individiual supports and glue into the centreline. But eventually I succeeded. I may have to redo some of them as they deformed after glueing and the long guide way from the anchor spill develops a bow not intended. Hope this even itself out once glued to the deck. Although I made up some anchor spills, I tried to replicate the notched grove to fit the chain, I may just redo them again to improve on the appearance. The picture shows them in its raw condition and unpainted.
I have enclosed a few pics to illustrate my story and hope you enjoy reading about my trials and tribulation.
I need to mention that I spent a few weeks in Germany with stays in Hamburg (obligatory visit at the IMM) Berlin, Prag and Dortmund to attend the Inter Modellbau in April. Interesting but I was disappointed about the ships model segment being a bit sparse. Lots of Model rail and R/C trucks.

Made some progress with the superstructure having completed the transition of the removable Bootsdeck. This turned out to be more difficult than thought but with a lot of adjustments and 'building on the fly' so to speak, I think I found the workable solution.
Issues I have found were the different materials. Since I have selected to arbourite for deck material but side walls are styrene. I found some issues with the styrene as it will somewhat deform when too much solvent for the glue is applied. Also I am using .5mm material as I attempting to make the windows appear as in the original (no frame and very small margin in thickness). Fortunately I had some styrene rectangular tubing with the exact inside dimensions to be inserted flush to the wall and paint before applying the window acrylic from the back.

Thank you Jumpugly for the kind words. I will try to add more pictures as things are getting a bit easier. I had never done anything in this magnitude, so it is a steep learning curve.

I had hoped to finish the superstructure by Christmas but far from it. I finally managed to cut out the front wall and with adjustments and fine tuning finally felt comfortable to glue it in place. I had to do a lot of filling small spaces on the existing structure. As already mention previously the deck walls are styrene. I went for .5mm material for the outside. I wanted to achieve a (almost) flush appearance for the windows, gave it a few coat of white paint and followed with clear material where the windows are and laminated another layer of material to strengthen the structure. BTW the windows are inserts cut from 6.5x5.5mm tubular material and individual sanded to

Having finished the basic superstructure it is now on to the fabrication of really small parts and a challenge it is. I am quite happy how that has turned out although took me a very long time with adjustments, sanding and painting/repainting as one sees always more warts needing improvements.